Combining many rake tasks into one rake task

Question

Instead of running each rake task individually like this:

rake db:drop
rake db:create
rake db:migrate
rake db:load

I want to run one rake task

Answer 1

namespace :rebuild_dev do
 desc 'This rebuilds development db'
  task :clean_slate => :environment do 
    Rake::Task["db:drop"].invoke
    Rake::Task["db:create"].invoke
    Rake::Task["db:migrate"].invoke
    Rake::Task["db:load"].invoke
  end
end